<template>
    <div>
          <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
        <el-row>
            <el-col>
                <el-button @click="showAddCateDialog" type="primary">添加分类</el-button>
            </el-col>
        </el-row>

<tree-table class="treeTable" :data="catelist" :columns="columns" :selection-type="false" :expand-type='false' show-index index-text="#" border :show-row-hover="false" >
    <template slot="isok" slot-scope="scope" >
        <i class="el-icon-success" style="color:green;" v-if="scope.row.cat_deleted===false"></i>
         <i class="el-icon-error" style="color:red;" v-else></i>

    </template >
    <template slot="order"  slot-scope="scope">
         <el-tag v-if="scope.row.cat_level===0" size="mini" >一级</el-tag>
        <el-tag v-else-if="scope.row.cat_level===1" size="mini" type="success">二级</el-tag>
         <el-tag size="mini" type="warning" v-else>三级级</el-tag>

    </template>
    <template slot="opt" slot-scope="scope">
        <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
        <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
    </template>
</tree-table>

<el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="querInfo.pagenum"
      :page-sizes="[3, 5, 10, 15]"
      :page-size="querInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>
    </el-card>

    <el-dialog
  title="添加分类"
  :visible.sync="addCateDialogVisible"
  width="50%" @close="addCateDialogClosed"
 >
  <el-form :model="addCateForm" :rules="addCateFormRules" ref="addCateFormRef" label-width="100px" >
  <el-form-item label="分类名称：" prop="cat_name">
    <el-input v-model="addCateForm.cat_name"></el-input>
  </el-form-item>
    <el-form-item label="父级分类：" > 
  <el-cascader
    v-model="selectedKeys"
    :options="parentCateList"
    :props="cascaderProps"
    @change="parentCateChanged"
    clearable
    change-on-select 
    >
    
    </el-cascader> 
  </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="addCateDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addCate">确 定</el-button>
  </span>
</el-dialog>
    </div>
</template>
<script>
export default {
    data:function(){
        return{
            querInfo:{
                type:3,
                pagenum:1,
                pagesize:5
            },
            parentCateList:[],
            selectedKeys:[],
            cascaderProps:{
                value:'cat_id',
                label:'cat_name',
                children:'children',
                expandTrigger:'hover'
            },
            addCateForm:{
                cat_name:'',
                cat_pid:0,
                cat_level:0
            },
            addCateFormRules:{
                cat_name:[
                    {required:true,message:'请输入分类名称',trigger:'blur'}
                ]
            },
            catelist:[],
            total:0,
            addCateDialogVisible:false,
            columns:[
                {
                    label:'分类名称',
                    prop:'cat_name'
                },
                {
                    label:'是否有效',
                    type:'template',
                    template:'isok'
                },
                 {
                    label:'排序',
                    type:'template',
                    template:'order'
                },
                 {
                    label:'操作',
                    type:'template',
                    template:'opt'
                }
            ]

        }
    },
    created:function() {
        this.getCateList()
    },
    methods:{
        getCateList:async function(){
          const{data:res} = await this.$http.get('categories',{
                params:this.querInfo
            })
            if(res.meta.status!==200){
                return this.$message.error('获取商品分类失败！')
            }
            console.log(res.data)
            this.catelist=res.data.result
            console.log(this.catelist)
            this.total=res.data.total
            console.log(this.total)

        },
        addCate:function(){
            this.$refs.addCateFormRef.validate(async valid=>{
                if(!valid)return
                const{data:ref}=await this.$http.post('categories',this.addCateForm)
                if(ref.meta.status!==201)return this.$message.error("分类添加失败")
                this.$message.success("分类添加成功")
                this.getCateList()
                this.addCateDialogVisible=false
            })
            console.log(this.addCateForm)
        },
        parentCateChanged:function(){
            if(this.selectedKeys.length>0)
            {
                this.addCateForm.cat_pid=this.selectedKeys[this.selectedKeys.length-1]
                this.addCateForm.cat_level=this.selectedKeys.length
                return
            }
            else{
                this.addCateForm.cat_pid=0
                this.addCateForm.cat_level=0
            }
        },
        getParentCateList:async function(){
           const{data:res}=await this.$http.get('categories',{
                params:{type:2}
            })
            if(res.meta.status!==200)
            {
                return this.$message.error("获取分类数据失败")
            }
            console.log(res.data)
            this.parentCateList=res.data

            
        },
        addCateDialogClosed:function(){
            this.$refs.addCateFormRef.resetFields()
            this.selectedKeys=[]
            this.addCateForm.cat_pid=0
            this.addCateForm.cat_level=0
        },
        showAddCateDialog:function(){
            this.getParentCateList()
            this.addCateDialogVisible=true
        },
        handleSizeChange:function(pagesize){
            this.querInfo.pagesize=pagesize
            this.getCateList()
        },
        handleCurrentChange:function(pagenum){
            this.querInfo.pagenum=pagenum
            this.getCateList()
        }
    }
}
</script>
<style lang="less" scoped>
.treeTable{margin-top: 15px;}  
.el-cascader{width: 100%;}
</style>